78708530 has 16 divisors (see below), whose sum is σ = 147835584. Its totient is φ = 30114480.

The previous prime is 78708517. The next prime is 78708547. The reversal of 78708530 is 3580787.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170876 + ... + 171335.

It is an arithmetic number, because the mean of its divisors is an integer number (9239724).

Almost surely, 2^78708530 is an apocalyptic number.

78708530 is a deficient number, since it is larger than the sum of its proper divisors (69127054).

78708530 is a wasteful number, since it uses less digits than its factorization.

78708530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342241.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 78708530 is about 8871.7827971609. The cubic root of 78708530 is about 428.5556914327. Note that the first 3 decimals are identical.

The spelling of 78708530 in words is "seventy-eight million, seven hundred eight thousand, five hundred thirty".